examples/qos_sched: fix usage string

[ upstream commit fc48d8a ]

The short option written for interactive mode is --i in usage of
this qos_sched example. Actually, it is -i.

Fixes: cfd5c97 ("examples/qos_sched: add stats")

Signed-off-by: Ibtisam Tariq <ibtisam.tariq@emumba.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>

examples/qos_sched/args.c

@@ -39,7 +39,7 @@ static const char usage[] =
 	"           multiple pfc can be configured in command line                      \n"
 	"                                                                               \n"
 	"Application optional parameters:                                               \n"
-        "    --i     : run in interactive mode (default value is %u)                    \n"
+	"    -i      : run in interactive mode (default value is %u)                    \n"
 	"    --mst I : master core index (default value is %u)                          \n"
 	"    --rsz \"A, B, C\" :   Ring sizes                                           \n"
 	"           A = Size (in number of buffer descriptors) of each of the NIC RX    \n"